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TruDisk Pulse, efficient copper welding
TruDisk Pulse, efficient copper welding
Pulsed laser

TruDisk Pulse

TruDisk Pulse: efficient copper welding

Internal frequency doubling in the resonator of the TruDisk Pulse
Internal frequency doubling in the resonator of the TruDisk Pulse
Pulsed laser

TruDisk Pulse

Internal frequency doubling to produce the green laser light

Green light for copper welding

The pulsed high-power laser, TruDisk Pulse, enables you to efficiently weld highly reflective materials, such as copper. The optimal absorption, as well as the high peak pulse power of 4kW with pulse durations in the milliseconds range, enables unparalleled application results when welding points and short seams. The laser is therefore predestined for use in electrical engineering and electronics. The TruDisk Pulse is based on the proven disk laser technology.

Optimal input coupling

Many highly reflective materials, in particular copper, absorb green laser light much better than infrared light.

Low-spatter welding

Prevent spatter through more uniform heating and a more stable weld pool.

Consistent results

The more stable welding process results in more consistent weld point diameters and uniform welding depths.

Oxidized, sandblasted, or highly polished

The application results are largely achieved irrespective of variations in the material batch.

With the TruDisk Pulse 421, you achieve consistent, spatter-free application results when welding copper, regardless of the surface finish of the material.
Laser-welded electrical contacts of a control unit
Peak power with green light

With electronic and electrical engineering products, spatter during the welding process can result in short circuits or pores in the weld seam. The TruDisk Pulse reduces these risks with its optimal input coupling rate. The material is heated evenly, which results in a more stable weld pool. As a result, there is less spatter. This will help you avoid excessive rejects and cleaning cycles for the system.

High reproducibility during laser welding
Maximum reproducibility

The reproducibility of the components is significantly increased through the green laser light. One weld point is just like the next. In contrast to infrared laser light, the green laser light heats the copper components in a very uniform manner and always in the same way. This enables very precise welding depths with absolute reliability. The disk laser architecture of the beam source also helps, as this is particularly resistant to back-reflections, and is equipped with the active laser power control as standard in the TruDisk Pulse. This regulates the power in real time, pulse for pulse.

TruDisk Pulse, green spot welding in action

Consistent spot welding

Spot welding with the TruDisk Pulse provides especially low-spatter and reproducible results. The diameter and depth of the points remain consistent throughout the process.

TruDisk Pulse, laser welded bonding of two direct copper bonds

Direct copper bonding (DCB)

The TruDisk Pulse can also weld thin materials with no impact on the base. For example, copper tracks can be contacted onto substrates using ribbons or wires, without damaging the underlying ceramic.

Laser-welded copper sheet

Various surfaces

Whatever the surface quality, the TruDisk Pulse welds copper seams with consistent quality as a result of the more stable process at a wavelength of 515 nm, and ensures that you will have highly robust production. Most of the time-consuming preparations for standardized preparation of the surface finish using sandblasting, tin plating, or similar methods are omitted here.

Laser-welded electrical contacts of a control unit

Laser-welded electrical contacts

With the TruDisk Pulse, you can reliably weld sensitive electronic components by yourself. With the green wavelength, you can reduce spatter by over 95% in comparison to infrared light. This means that you effectively avoid short circuits and the resulting faulty components.

TruDisk Pulse 221
TruDisk Pulse 421
Laser parameters    
Laser Power 200 W 1 400 W 1
Maximum peak pulse power with LLK length 10 m 2 kW 4 kW
Maximum pulse energy with LLK length 10 m 20 J 40 J
Maximum gating ratio 10 % 10 %
Adjustable pulse duration 0.3 ms - 50 ms 0.3 ms - 50 ms
Beam quality at the input coupling in the LLK 4 mm▪mrad 4 mm▪mrad
Numerical aperture on the output coupling after LLK 0.1 0.1
Wavelength 515 nm 515 nm
Minimum laser light cable diameter 100 μm 100 μm
Structural design    
Width 1340 mm 1340 mm
Height 1430 mm 1430 mm
Depth 725 mm 725 mm
Maximum number of laser light cables 2 2
Protection class IP54 IP54
Ambient temperature 10 °C - 50 °C 10 °C - 50 °C
TruControl control


TruControl is the quick and easy-to-use control for TRUMPF solid-state lasers. It regulates the laser power in real time in order to deliver reproducible results. Additional modules are specially tailored to the requirements of the TruFiber: The CutAssist option automatically adapts the laser parameters to the speed of the guidance system. In order to ensure that parts are traceable, the DataStore module records all quality-related data.

If external controls are present, TruControl will communicate with them via all standard interfaces. Inputs are made via the touchscreen of the operating panel or via a panel PC. You can integrate your laser into the network via Ethernet and connect multiple PCs.

With TRUMPF you have the ability to adapt your solid-state laser to your installation and operating situation with flexibility. This applies, for example, to all beam guidance components and the control. Interfaces for different optics are provided right from the start. To save costs, your beam source can supply several work stations at the same time. The TRUMPF Remote Service helps you to ensure your system remains available, anywhere and at any time.

Flexible, integrated beam guidance elements

There are many different options for the beam guidance that will enable you to create a flexible plan with your laser. The plug & play optical laser cables can be easily connected to different work stations. Here, you choose the number of fiber outlets up to a total of two. The laser power can be flexibly divided across the outlets. This allows multiple work stations to operate simultaneously with split laser power or one after the other at full laser power. The modular design means that the laser power and the number of outlets can be changed retrospectively in the field at any time.

TRUMPF laser network

With the laser network, you can connect one or more lasers with up to two work stations in each case. In the process, your laser either splits its power to multiple stations, or it supplies them by taking turns with full power. This will enable you to combine different applications, such as welding and cutting.

Convenient and flexible control

In the event of an error, TRUMPF service experts will remotely access your laser via a secure remote connection. In many cases the fault can be remedied directly in this way, or the configuration of the laser can be modified in a way that permits you to continue manufacturing until the spare part arrives. This enables maximum availability for you.

Interface variety – for simple integration

Interfaces are key for the integration of a TruDisk Pulse laser in your machine or production line. The solid-state lasers from TRUMPF offer interfaces to all common fieldbus systems. Also available: real-time interface, parallel digital I/O, interface for process sensor systems, OPC UA software interface, analog input board, interface for intelligent TRUMPF optics.

Programmable focusing optics PFO 33
Intelligent down to the workpiece

Intelligent optics can be synchronized with your laser via a dedicated interface. This will allow you, for example, to use the PFO scanner optics optimally for your purposes. You can easily program the processing optics via the laser control system. You do not need any additional PCs or control systems.

Cooling processing optics/optical laser cables

Processing optics and fiber optic cables can be cooled easily and conveniently using the laser cooling water. Separate cooling is therefore, not necessary.


The WeldAssist database provides you with welding parameters for various materials and focal diameters. This makes set-up easier for frequently changing laser applications.

The TRUMPF sensor systems mean that your production will always be both productive and cost-effective. The sensor products VisionLine, CalibrationLine and integrated pyrometers ensure stable processes by monitoring all the procedures in laser production and make a significant contribution towards your process reliability. Processing continues unimpeded during the measurement – no interruptions are required, saving you valuable production time.

Image processing

TRUMPF VisionLine image processing detects features on the components and ensures that welding is always in the correct location.

Image processing, VisionLine Basic
VisionLine Basic

A digital camera image with cross-hairs in the laser focus helps with workpiece monitoring and teaching.

Calibration tool

The TRUMPF CalibrationLine tool checks and corrects the focal position and laser power on the workpiece at regular, individually definable intervals.

CalibrationLine Focus checks whether the focal position on the workpiece still matches the requirements.
CalibrationLine Focus

Regular checking of focal position

Lasers and laser systems – with us, the perfect pair. All beam sources are optimally attuned to the requirements of the TRUMPF laser systems. You can choose between numerous versions and options, resulting in a system which is precisely tailored to your task. It is, of course, also possible to integrate our lasers directly into your production lines.

TRUMPF offers you all the components you need for beam guidance from the laser to the workpiece. This also applies for various focusing optics which have proven themselves to be precise and reliable over many years of industrial use. The optics can be easily integrated – both in stand-alone processing stations as well as in complete production lines. The modular structure enables the optics to be continually adapted to the laser types and various processing situations.

Focusing optics

Regardless of whether you are welding, cutting, ablating, heat treating, or drilling, you can count on high-quality process results with robust focusing optics from TRUMPF.

BEO D35 focusing optics for welding with solid-state lasers

Versatile applications in cutting and welding up to the kilowatt range.

BEO D70 focusing optics with observation camera, crossjet, and aerator nozzle
BEO D70-2

Large working distances with small focal diameters

Programmable focusing optics

The ideal optics for remote processing

Programmable focusing optics PFO 20
PFO 20

Welding and drilling with the programmable focusing optics PFO

This product range and information may vary depending on the country. Subject to changes to technology, equipment, price, and range of accessories. Please get in touch with your local contact person to find out whether the product is available in your country.

  • The laser power at the workpiece may deviate from the rated power depending on the optics configuration.

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